[MD settings] remove breadcrumb code

The settings breadcrumb feature is being removed.
That location on the title bar will become the search
within settings.  This CL removes the breadcrumb
code.

BUG=589630

Review URL: https://codereview.chromium.org/1815523002

Cr-Commit-Position: refs/heads/master@{#381860}

chrome/browser/resources/settings/settings_resources.grd

@@ -155,17 +155,6 @@
       <structure name="IDR_SETTINGS_TRANSITION_BEHAVIOR_JS"
                  file="settings_page/transition_behavior.js"
                  type="chrome_html" />
-      <structure name="IDR_SETTINGS_BREADCRUMB_CSS"
-                 file="settings_ui/breadcrumb.css"
-                 type="chrome_html" />
-      <structure name="IDR_SETTINGS_BREADCRUMB_HTML"
-                 file="settings_ui/breadcrumb.html"
-                 type="chrome_html"
-                 flattenhtml="true"
-                 allowexternalscript="true" />
-      <structure name="IDR_SETTINGS_BREADCRUMB_JS"
-                 file="settings_ui/breadcrumb.js"
-                 type="chrome_html" />
       <structure name="IDR_SETTINGS_CR_SETTINGS_UI_CSS"
                  file="settings_ui/settings_ui.css"
                  type="chrome_html" />

chrome/browser/resources/settings/settings_ui/breadcrumb.css

-/* Copyright 2015 The Chromium Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file. */

chrome/browser/resources/settings/settings_ui/breadcrumb.html

-<link rel="import" href="chrome://resources/html/polymer.html">
-
-<dom-module id="settings-breadcrumb">
-  <link rel="import" type="css" href="breadcrumb.css">
-  <template>
-    <template is="dom-if" if="{{currentRouteTitles}}">
-      <span on-tap="onTapPage_">{{currentRouteTitles.pageTitle}}</span>
-
-      <template is="dom-repeat" items="{{currentRouteTitles.subpageTitles}}">
-        &gt;
-        <span on-tap="onTapSubpage_"
-            data-subpage-index$="{{index}}">{{item}}</span>
-      </template>
-    </template>
-  </template>
-  <script src="breadcrumb.js"></script>
-</dom-module>

chrome/browser/resources/settings/settings_ui/breadcrumb.js

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-/**
- * @fileoverview
- * 'settings-breadcrumb' displays the breadcrumb.
- *
- * Example:
- *
- *     <settings-breadcrumb current-route="{{currentRoute}}">
- *     </settings-breadcrumb>
- */
-Polymer({
-  is: 'settings-breadcrumb',
-
-  properties: {
-    /**
-     * The current active route.
-     */
-    currentRoute: {
-      type: Object,
-      notify: true,
-    },
-
-    /**
-     * Page titles for the currently active route.
-     */
-    currentRouteTitles: {
-      type: Object,
-    },
-  },
-
-  /** @private */
-  onTapPage_: function() {
-    this.currentRoute = {
-      page: this.currentRoute.page,
-      section: '',
-      subpage: [],
-    };
-  },
-
-  /** @private */
-  onTapSubpage_: function(event) {
-    var clickedIndex = event.target.dataset.subpageIndex;
-    this.currentRoute = {
-      page: this.currentRoute.page,
-      section: this.currentRoute.section,
-      subpage: this.currentRoute.subpage.slice(0, clickedIndex + 1),
-    };
-  },
-});

chrome/browser/resources/settings/settings_ui/settings_ui.html

@@ -10,7 +10,6 @@
 <link rel="import" href="chrome://md-settings/settings_main/settings_main.html">
 <link rel="import" href="chrome://md-settings/settings_menu/settings_menu.html">
 <link rel="import" href="chrome://md-settings/settings_page/settings_router.html">
-<link rel="import" href="chrome://md-settings/settings_ui/breadcrumb.html">
 
 <dom-module id="settings-ui">
   <link rel="import" type="css" href="settings_ui.css">
@@ -20,9 +19,6 @@
     </settings-router>
     <paper-toolbar>
       <div class="title" i18n-content="settings"></div>
-      <settings-breadcrumb current-route="{{currentRoute}}"
-          current-route-titles="[[currentRouteTitles]]">
-      </settings-breadcrumb>
     </paper-toolbar>
     <paper-drawer-panel drawer-width="256px" id="panel">
       <settings-menu drawer class="flex" current-route="{{currentRoute}}">